Clinical trial Recruiting at 10 sites Phase 1 Interventional Ages 18 and up

JZP898 infusion for advanced metastatic solid tumors

Official title: A Phase 1, First-in-human, Open-label, Multicenter Study of JZP898 as Monotherapy and in Combination With Pembrolizumab in Participants With Advanced or Metastatic Solid Tumors

Run by Jazz Pharmaceuticals · NCT06108050 · Data updated 2026-11-12

This study is testing a new treatment called JZP898, alone and with another drug, to see if it can help adults with advanced solid tumors feel better and improve their health.

Quick facts

PhasePhase 1
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment177 (estimated)
SponsorJazz Pharmaceuticals
Industry-sponsored
Drugs / interventionsradiation, pembrolizumab
Locations10 sites (Encinitas, California and 9 other locations)
StatusRecruiting
StartedNovember 7, 2023
Main results expectedNovember 30, 2027
Study endsMay 31, 2028
Registry record updatedDecember 16, 2025
Trial IDNCT06108050 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include adults aged 18 and older with advanced or metastatic solid tumors who have previously received anticancer therapies.

Probably not a fit

Patients with solid tumors for whom there are effective standard of care treatments available may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This Phase 1 study investigates the safety and effectiveness of JZP898, both as a standalone treatment and in combination with pembrolizumab, for adults with advanced or metastatic solid tumors. The study is divided into two parts: Part A focuses on determining the appropriate dosages and safety profile of JZP898, while Part B evaluates its clinical activity when combined with pembrolizumab. Participants will be closely monitored for pharmacokinetics, immunogenicity, and preliminary antitumor activity.

Why it matters

Potential benefit: If successful, this treatment could provide a new therapeutic option for patients with advanced solid tumors who have limited treatment alternatives.

How similar studies have gone: Other studies exploring similar combinations of immunotherapy and targeted treatments have shown promising results, indicating potential for success in this approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria

* Adult ≥ 18 years of age
* Histological or cytological diagnosis of advanced or metastatic solid tumor.

  1. Previously treated participants with solid tumors that are amenable to CPI therapy (eg. NSCLC, melanoma, HNSCC, RCC, HCC, gastroesophageal carcinomas, UC, or CRC \[MSI-H\]) for whom, in the opinion of the investigator, there is no SoC available to convey clinical benefit.
  2. Parts A2 and B: previously-treated (≥ 1 line of prior anticancer therapy) participants with select tumor types (NSCLC, HNSCC, melanomas, RCC, and UC) who have progressed on/after prior CPI therapy based on investigator assessment per RECIST version 1.1.
* Participants in select tumor types:

  1. NSCLC: eligible for platinum-based therapy and received platinum-based therapy prior to inclusion in the study.
  2. HNSCC: eligible for platinum therapy and received platinum-based therapy prior to inclusion in this study.
  3. Melanoma with known BRAFv600 mutation: received BRAF/MEKi therapy before this study.
* ECOG score of 0 to 1.
* Measurable disease per RECIST version 1.1 criteria.
* Parts A1 and A2 only: willing to consent to mandatory tumor biopsies (both pretreatment and post-treatment with JZP898) unless medically infeasible
* Adequate organ and bone marrow function as indicated by the following laboratory values (within 4 weeks prior to starting the study interventions)
* Men and women of reproductive potential to observe highly effective birth control for the duration of treatment and for 4 months following the last dose of study drug;
* Additional criteria may apply

Exclusion Criteria

* Unresolved toxicities from previous therapy that is \> Grade 1.
* Hypersensitivity to mAb, IFNα, or study intervention components.
* Primary CNS tumor or symptomatic CNS metastases.
* Have a second primary malignancy treated within the previous 2 years (exceptions: non-metastatic, non-melanomatous skin cancers, carcinoma in-situ, and melanoma in-situ).
* Active autoimmune disease (in the last 2 years) requiring systemic steroids or immunosuppressive agents.
* Active or history of pneumonitis (noninfectious) or interstitial lung disease that required steroids or has current pneumonitis/interstitial lung disease.
* Any history of suicidal behavior or any suicidal ideation
* Clinically significant ischemic/hemorrhagic cerebrovascular accident/stroke and/or clinically significant active cardiovascular disease
* Received any anticancer therapy within 5 half-lives or 4 weeks (whichever is shorter) prior to the first dose of study drug
* Received prior radiotherapy within 2 weeks of the first dose of study drug or have had a history of radiation pneumonitis
* Major surgery within 2 weeks prior to the first dose of study intervention.
* Participant is pregnant, breastfeeding, or expecting to conceive or father children within the projected duration of the study
* Had a stem cell/solid organ transplant.
* Receipt of prior IFNα therapy

Where it's running

  • California Cancer Associates for Research and Excellence
    Encinitas, California, United States
    Recruiting
  • California Cancer Associates for Research and Excellence
    Fresno, California, United States
    Recruiting
  • Sarah Cannon Research Institute at HealthONE
    Denver, Colorado, United States
    Recruiting
  • Florida Cancer Specialists
    Orlando, Florida, United States
    Recruiting
  • Duke University Medical Center - Duke Cancer Institute
    Durham, North Carolina, United States
    Recruiting
  • Sidney Kimmel Cancer Center at Thomas Jefferson University Hospital
    Philadelphia, Pennsylvania, United States
    Recruiting
Show 4 more locations
  • SCRI Oncology Partners
    Nashville, Tennessee, United States
    Recruiting
  • Texas Oncology - Baylor Charles A Sammons Cancer Center
    Dallas, Texas, United States
    Recruiting
  • The University of Texas MD Anderson Cancer Center
    Houston, Texas, United States
    Recruiting
  • Virginia Cancer Specialists
    Fairfax, Virginia, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.